11209246945 has 12 divisors (see below), whose sum is σ = 14565389436. Its totient is φ = 8277597120.

The previous prime is 11209246901. The next prime is 11209246957. The reversal of 11209246945 is 54964290211.

It can be written as a sum of positive squares in 6 ways, for example, as 4160637009 + 7048609936 = 64503^2 + 83956^2 .

It is not a de Polignac number, because 11209246945 - 2²⁵ = 11175692513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6631846 + ... + 6633535.

It is an arithmetic number, because the mean of its divisors is an integer number (1213782453).

Almost surely, 2^11209246945 is an apocalyptic number.

It is an amenable number.

11209246945 is a deficient number, since it is larger than the sum of its proper divisors (3356142491).

11209246945 is a wasteful number, since it uses less digits than its factorization.

11209246945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13265412 (or 13265399 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 11209246945 in words is "eleven billion, two hundred nine million, two hundred forty-six thousand, nine hundred forty-five".